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Microsoft Visual Studio workspace file (.dsw)

.dsw file signature | text/plain

Microsoft Visual Studio workspace file (DSW) is a project workspace format created and maintained by Microsoft for Visual Studio. It stores collections of related projects, build settings, and developer preferences for organizing software development work in older versions of Visual C++ and Visual Studio. The format is largely legacy and has been replaced in newer toolchains by solution files; it is generally safe and contains configuration data rather than executable content.

Safe

Magic Bytes

Offset 0
64 73 77 66 69 6C 65

Sources: Gary Kessler

Extension

.dsw

MIME Type

text/plain

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .dsw files in Python

Python
def is_dsw(file_path: str) -> bool:
    """Check if file is a valid DSW by magic bytes."""
    signature = bytes([0x64, 0x73, 0x77, 0x66, 0x69, 0x6C, 0x65])
    with open(file_path, "rb") as f:
        return f.read(7) == signature

How to validate .dsw files in Node.js

Node.js
function isDSW(buffer: Buffer): boolean {
  const signature = Buffer.from([0x64, 0x73, 0x77, 0x66, 0x69, 0x6C, 0x65]);
  return buffer.subarray(0, 7).equals(signature);
}

How to validate .dsw files in Go

Go
func IsDSW(data []byte) bool {
    signature := []byte{0x64, 0x73, 0x77, 0x66, 0x69, 0x6C, 0x65}
    if len(data) < 7 {
        return false
    }
    return bytes.Equal(data[:7], signature)
}

API Endpoint

GET /api/v1/dsw
curl https://filesignature.org/api/v1/dsw

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .dsw file?

A .dsw file is a Microsoft Visual Studio workspace file file. Microsoft Visual Studio workspace file (DSW) is a project workspace format created and maintained by Microsoft for Visual Studio. It stores collections of related projects, build settings, and developer preferences for organizing software development work in older versions of Visual C++ and Visual Studio. The format is largely legacy and has been replaced in newer toolchains by solution files; it is generally safe and contains configuration data rather than executable content.

What are the magic bytes for .dsw files?

The magic bytes for Microsoft Visual Studio workspace file files are 64 73 77 66 69 6C 65 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .dsw file?

To validate a .dsw file, read the first bytes of the file and compare them against the known magic bytes (64 73 77 66 69 6C 65) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .dsw files?

The primary MIME type for .dsw files is text/plain.

Is it safe to open .dsw files?

Microsoft Visual Studio workspace file (.dsw) files are generally safe to open. They are classified as low risk because they primarily contain data rather than executable code. However, always ensure files come from a trusted source.